Someone who is using facebook as a forum for their abuse of another. Whether via indirect comments posted as their own status, or direct bitching on another's wall.
Mate, did you look on facebook last night? Jane was being a total facecunt to Aida.
A mouth; specifically, one optimally designed for sucking copious amounts of semen out of oversized penises. When a faggot cumdump is in his customary "full-service" position (on all fours), the facecunt is the forward-facing fuckhole, equipped with a tongue; the rear fuckhole is properly known as a "boypussy" or, in more mature specimens, as a "mancunt."
Me and my frat brothers slammed that fuckbitch's facecunt so hard and so long, he fuck near drowned in jism.
Precedes or follows either a gratuitously disrespectful or honest remark, originated in New York City. Used in similar fashion to "no offense" or "to be honest," interchangeably.
Ya mans is wild buns, respectfully. Respectfully he's washed.
After school, The Modells on Jamaica Ave was active. Respectfully.